you are misunderstanding what you see. The interfaces virbr0 and virbr0-nic are the default virtual interfaces created for use with virtual machines and have no bearing on communications from the host machine to the world. The enp2s0 interface is your actual interface that talks to the LAN and the internet, and from the data there it seems ok at first look.
As far as the hostnamectl command and its results you should set an actual hostname for your host to handle the error you posted here.
Since I (like you) do not use a machine with an internet visible address I just used a made up domain to add the hostname with the command
sudo hostnamectl set-hostname yourhost.your.domain using whatever you feel appropriate for the hostname and domain as long as the domain name you use is not an actual internet reachable domain.
Then in /etc/hosts I would add the line
192.168.1.107 yourhost yourhost.your.domain Those 2 steps should fix the error you posted. Please try that and let us know if it worked or if there is more we need to help figure out.